Pathways Language Model (PaLM)

Google, 540 billion parameters, available via API

PaLM, announced April 2022, is based on Google’s Pathways AI architecture which aims to build models that can handle many different tasks and learn new ones quickly. PaLM is a 540 billion parameter model trained with the pathways system, can perform hundreds of language related tasks, and (at the time of launch) achieved state of the art performance on many of them.

One of the remarkable features of PaLM was generating explanations for scenarios requiring multiple complex logical steps such as explaining jokes.

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https://ai.googleblog.com/2022/04/pathways-language-model-palm-scaling-to.html